Revert "Rename programs to instruction_processors (#3789)" (#3824)

This reverts commit 34344982a9.

programs/failure_program/Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+name = "solana-failure-program"
+version = "0.14.0"
+description = "Solana failure program"
+authors = ["Solana Maintainers <maintainers@solana.com>"]
+repository = "https://github.com/solana-labs/solana"
+license = "Apache-2.0"
+homepage = "https://solana.com/"
+edition = "2018"
+
+[dependencies]
+solana-sdk = { path = "../../sdk", version = "0.14.0" }
+log = "0.4.2"
+
+[dev-dependencies]
+solana-runtime = { path = "../../runtime", version = "0.14.0" }
+
+[lib]
+name = "solana_failure_program"
+crate-type = ["cdylib"]
+

programs/failure_program/src/lib.rs

@@ -0,0 +1,14 @@
+use solana_sdk::account::KeyedAccount;
+use solana_sdk::instruction::InstructionError;
+use solana_sdk::pubkey::Pubkey;
+use solana_sdk::solana_entrypoint;
+
+solana_entrypoint!(entrypoint);
+fn entrypoint(
+    _program_id: &Pubkey,
+    _keyed_accounts: &mut [KeyedAccount],
+    _data: &[u8],
+    _tick_height: u64,
+) -> Result<(), InstructionError> {
+    Err(InstructionError::GenericError)
+}

programs/failure_program/tests/failure.rs

@@ -0,0 +1,29 @@
+use solana_runtime::bank::Bank;
+use solana_runtime::bank_client::BankClient;
+use solana_runtime::loader_utils::{create_invoke_instruction, load_program};
+use solana_sdk::client::SyncClient;
+use solana_sdk::genesis_block::GenesisBlock;
+use solana_sdk::instruction::InstructionError;
+use solana_sdk::native_loader;
+use solana_sdk::signature::KeypairUtil;
+use solana_sdk::transaction::TransactionError;
+
+#[test]
+fn test_program_native_failure() {
+    let (genesis_block, alice_keypair) = GenesisBlock::new(50);
+    let bank = Bank::new(&genesis_block);
+    let bank_client = BankClient::new(bank);
+
+    let program = "solana_failure_program".as_bytes().to_vec();
+    let program_id = load_program(&bank_client, &alice_keypair, &native_loader::id(), program);
+
+    // Call user program
+    let instruction = create_invoke_instruction(alice_keypair.pubkey(), program_id, &1u8);
+    assert_eq!(
+        bank_client
+            .send_instruction(&alice_keypair, instruction)
+            .unwrap_err()
+            .unwrap(),
+        TransactionError::InstructionError(0, InstructionError::GenericError)
+    );
+}